A motion-blurred photograph of houses, with the Port Hills in the background. The photographer comments, "This I hope gives you a feel of what it feels like in an earthquake. When you spend your whole life thinking that you and your home are built on solid ground, it can be quite a shock when you find it is not. You can feel the house shaking like a dog with a toy, rising up violently underneath you or the most gentle form which is when the ground moves gently like a wave moving under a rowing boat. It is not just the movement, you often get a rumbling sound which can precede a violent shake or can result in no movement at all. This means that some vehicles can sound like the rumbling initially and in the early days would get your heart racing. Another form of stress is when big excavators as heavy as a tank move as you can feel the ground shake from streets away, but you do not always hear the engine. For most of us the problem when the shaking starts, is wondering if this is the start of an extremely violent earthquake or will it peter out".
A damaged concrete tilt-slab building. The slabs have separated and tilted, and are supported by steel bracing. The photographer comments, "This house in Christchurch was made by bolting 4 slabs of concrete together. A fantastic idea in a country prone to earthquakes".
A digitally manipulated image of a damaged bridge in Lake Terrace Road in Burwood. The photographer comments, "After the September earthquake this bridge was a little wonky, but you would cross it, possibly without fear, now though it is too far gone".
Detail of a light fitting outside the former Ozone Hotel in North New Brighton. The photographer comments, "The broken light fitting is on the Ozone Hotel, which is red stickered after the 22 February 2011 earthquake in Christchurch. They will need to fix the building before this light gets a new bulb. The distinct blue colour seen is what made the Ozone stand out on Marine Parade".
A cycle-lane sign submerged in water. The photographer comments, "During the Christchurch earthquake this sign must have dropped off of the pedestrian bridge above and landed straight down into the Avon River".
A damaged brick building has wooden bracing holding the walls together. The photographer comments, "This building came through the September Christchurch quake with a few band aid plasters, but the February quake means that she is now DNR (Do Not Resuscitate)".
A brick wall has fallen from this house, exposing the rooms within and leaving a pile of rubble in front. The ceiling has slumped and is held up with jacks. The photographer comments, "This was probably the result of the shallower February Christchurch earthquake rather than the bigger September one".
A large mobile generator on Travis Road. The photographer comments, "Big mobile generator giving power and relief to hard pressed families in North New Brighton after the Christchurch quake".
A graph showing aftershocks from 4 September to 5 October.
An infographic charting aftershocks from 4 September to 10 September.
A banner reading, 'The Big Quake, Canterbury, September 4, 2010'.
An infographic charting aftershocks from 4 September to 8 September.
The badly twisted Medway Street footbridge. The photographer comments, "The September 4th 2010 earthquake in Christchurch was so violent that the banks of the Avon River moved towards each other. This footbridge being metal had to twist sideways to release the pressure of being pushed from both river banks. It looked like it had been wrung out like a wet towel".
A digitally manipulated image of a fallen headstone. The photographer comments, "Since the September 2010 earthquake in Christchurch, New Zealand a lot of the headstones have fallen, but sadly a lot have not been resurrected to their former places".
A red sticker on the door of a damaged building in North New Brighton. The photographer comments, "A year after the earthquake in Christchurch a lot of buildings outside of the CBD are covered in cracks and beyond repair. These will slowly be demolished, but until then the buildings will be protected by a movable barrier and a red sticker".
A black and white photograph of a pile of rubble in front of a window. In the background behind the window a gap in the building can be seen. The photographer comments, "The result of the Christchurch earthquakes".
A map showing the locations of aftershocks since 4 September 2010.
Photograph captioned by Fairfax, "Damage after the September 4th earthquake".
Photograph captioned by Fairfax, "Damage after the September 4th earthquake".
Photograph captioned by Fairfax, "Damage after the September 4th earthquake".
Photograph captioned by Fairfax, "Damage after the September 4th earthquake".
Photograph captioned by Fairfax, "Rockfall following the September 4th earthquake".
A scan of page 4 of the third book of The Pledge.
A scan of page 4 of the fifth book of The Pledge.
A scan of page 4 of the second book of The Pledge.
An infographic charting aftershocks between 4 September 2010 and 30 May 2011.
A scan of page 4 of the fourth book of The Pledge.
A scan of page 4 of the first book of The Pledge.
A scan of page 4 of the sixth book of The Pledge.
A scan of page 4 of the eighth book of The Pledge.